Fuse plug



March 23 1926. 1,577,447

H. E. v. BRUCKNER FUSE PLUG Filed April 13, 1923 I d- I '7 g vi otjpartbe fi I arlottenbl 7 5 mew-Pl lirpitliu er B l n, G

I are In unte dL- a plurality 6f -z fuses whie en prising plug; which;

serted in a w'all-soelfet fuse Wire; 111' e1reu-1t: ;i

iehfl'eorrespends with the distance :andfdt the same these:irespects;gth': eleetrie-{onnection er the ly 1 used fv'vith inultiplei fusefl-piugeaf i qilhe iniproived fuse-plug further sists only-t two sepzirate pa-rtsand the up} ilQgsserew 'pr-v3other elements haying -qto he loosened fel th s ;purposes? :7 TWO? embod ments? of d elevation of a fuse riot-the same;

s. to; fuse plugs; and 3118011, fuse cplugs 'pre;.; up'portr'e or carrier; von

be. ksuc'ces six elyi brought into the: p 3 1 T f forming theone centactfl'beai'slion its lower? P U esentinvention 0on he fuse s1 p" ortaor carrierleom-.

5e "wiresiis {formed its 1& pin; y e -i-nserted ini the :lower 101'; g, the LEdiSOnQ'IsQreM; as an 'erdji'nztry tweon three-pin .plug is in-1 For. placing zr fresh 1is inerelynecessary --t0:-Ip u1-1;=;the rueeemier 101- ipinspluyg out of J 3 thef00tipirufthen'rteturn said plug for an 05 fuse Wires arranged therein r rei-ns ert the same in the lewerx-pz'trt' 1 the electrid eenneetione between -;-the ffuse *carfri'eri pr: plug here in exactly theysmie manner as;

plug 'nierelyfhy. the

Sunk contact or the onnec'ti'on there;

thei fsurestspo'ssible and} hezits in both elastidlidir'rg-c'0nta ets Which' are common? a each pairgiof boresiJ, Ka fuse-wire M (sil ve'r'wire for instanceiis inserted which ex 1 'tendS thrOugh ,bore J and passes threugh :transve'rsefbore eer groove Linto boreK.

. f e. the aIdVanta-ge of great simplicity as lt'con-Z.

p venti'on-"area'y of. exampleiin 'the/accoine m Pa t y i V T V 6) ,flthe.calvlty-designedto recewetlns ournal being evldentlyof similar cross SBOillQll-' ig. his a' s ection-onlineyc Djof Fig.1." 7 5 shows a; slightly modified form-0f. construction of thef pin plu'g Whieh" terms. the-upper partot' the device- Q .1 i p Fig. '6 "s seetion corresponding to. that of Fig, 4,;butfshowing somewhat ARR}? amen vonxmgn BRfiGKfiER; cnnntemmnnnuzie, NEAR-BERLIN, GER-. MANYQ AS$IGNOR no f PARNOX A 'rIEuGEsELLsbH FT, O "LUCERNE,"

Fig. 7 alsoeis u section c orrespondingzto o'f the'foot -parti .i

-T he foot part A of fin sul ziting materifali whichghasfthe usualinetallic Edison screw'gB surface the other contact C-. Er0nijt11iS:eon tact C the; conductor ,D-z extendsiliupwa rd"- through-"w central bore ofgthe' foot part, A.-.*;

The upperendiof the conductor- D is zformedl drmv-ing,j ine'uclntmanner that itleis Well} i protected .a ideaniiot be readily touched by.

the hand orbyfa finger when theifuseicarrier J From the ,upperFendietithe inetal 'ieeziting' efthejEdison v.sc'ren' B, a wire for conductor Grg; extends through a .bore of: the foot "part5 Aft'oja cavity in 'the top end "thereof "coni- The' upper part offusecerrier H of-the 'strueted like a' plug sleeve forfa pi rplugr ii i device isformed-like a pin plughnd coma prises; a Series 0f :parallkelwvertiea-lu bores? J? and:.K belonging together byi; pairs and: arfranged 111 two concentric 501113168 (see; Fig:

3);; The bohres J, K, 0 1: eztehvare eon-v nectejd the one-With the other at their upper. endsi by-transverse bores or grooves. L. "In

The lower endsef all 'fUSG 'WiI'BSfM at the lower openings of? the: bores, K are-in com A. ,This journal 0 may be either cylindri 100. I f At this point the; body H has the shape ofuaj'ournal O. or 0 respectively, fitting in ItO, the corresponding es vity int the wcentral Lpart' of the upper surface of the feet, part}- 0211 (Fig. 4) or-0f prismatic shape (Fig.5

5' The nurnber of side's of ithe pi isni'has to.

contained in the fuse carrier.

correspond with the number? of fuse Wires n" h b J fis Q nneOtQCEW i h Za P g E which projectsdownwafd ffom theIfuse carrier H. 'Thismetal pIug in fitsinto the upperend'of the boreof the foot part ;A* which contains the conductor I G and is constructed' like a Plug sleeve. 1

' cis covered diskPf ft-i n-ned sheet-1291 arranged ahove a mieajplate 'Q'whichcalso covers the grooves; L- font-he'fuse-wi-res' Thetinned sheet-iron disk-P has atthe ppoints above thei'ends of the bores Jf'peep QhQl esQR (Fig. Whieh permit' to sine-111 5 taneously observe al]? the a fuse Wires. f-These [peep hoiesjeanbe oblong insteadnf being rcire-ular' as shownso that the entire grooves V with the parts of the fuse ires situated in the; same will be visible.

c 1 the device 7 isr toabe employed the I nsert'eci' inte the foot part 7 Y ogflthelfuse-pl gin-such a mannengthat; one

- oifithe 'contaet pins1Eengages with the bore 7 iffiise cear'rienH:

" 5 which contains: the eonchietorj'Grand eomesf 1' with" the. eontaetfpllate -F' oifthe centratco'n engages the hofea: containing?conductor i the foot'pa 'tijA' i 'stthen sc 'ewectinto,the. 45 7 Corresponding soeket thefusepl ig ready) foriise.)

g ceiitaet with this conctuctor d-ireetly 01i *withthe metal eoating Qf -'t l'l e-'plll g sleeve connected therewith, -Co'rres'ponc1ing cavi ties: Win the upper surface of part A; are;

Fig- 7." The brassa'plate Ni ofthe fuse ear rien comes" atythe same time in contact.

ctuetoav'D of the foot as the; pin; E

z fuse {Wirehas:fused;ewing to short I circuit it is mere-by necessary to pull out the fuse carrier" to turn the same fer ian angfeawhich corresponds to the; d istanee "tween two contact pins E i"then to ref-f insert the same 'into'thetfoot part, whereupon the device isfagain'ready; fo}i:use-;By cor responding mar-ks: fongthe edge of the part "H-i therequirwlmeasure: oflthe' said turning thereofFmay be indieat'e'ci'. If' the joju-rnal Ot "is v of prismatiesh'ape as; indicatedin Fig; 6 the anglefor" fihi el i the V fuseQCar-rier has to be rotatecl hefore reinsenti'ngit in 60 theijfoot part isal'so determined as the mum: bet; of: sides "of theprisln corresponds Wi-th gthe/qnulnbei 'and position of th-e -fusef wims contained. in the fuse: carrier;

. Instead' of providing;inthelends' of the beresjJ of the fuse carrier anuuiber of fpins E corresponding to thenumber jof'fuse 'wires,fthel'owei" ends of the-bores J may r be"constructedfso that they form pin sieeves}, The other end" of the-,fuse wi e M lying.

is required;which-must be; fixed on the feet part aboyethe eond'uetor G; and cur e 1 in av similar inannei as the pins of theco'ms7 gTheupper part or fusefearrler H made from'porcelam or similar insulating material 10f fuse ivvires; with" a eomhion-eentral e V the. fuse plug-is, in use. "provided for the reception: of the other pins, theseij Cavities theing however not connected 1 with conductors. Awsingie eirculaimove 7 X- may' also beai liangedfinstead 10,- said 7 f cavitiesinthe surface lof pa'rt A :foi jthe 'i ev ception' 0f the unused: p'insflE as shown in I e'e ntr all ypfojreeting on theilewerfa ranged-Lon said 10111 113211 7 a entfalf boreif n saidfootiip art, the (common foot contact; of

pins. engaging said holes when the fuse plug wires on the fuse carrier, a jet; "a1

fitting intofsaid bore for: engagingsaid 681].

S (Fig; 5-) In this case only one metal pin rent-conducting ';connection"; the fewitlge In I this; case as' well as in the 'aboveldescribed 1 other; case the pins E are;preferab1y-e1astic" If d ec-lare that-wl iat I claim is 1, A fuse plug compris ng a foot part having two contacts for-engaging-the con nection-contaets iof' thel i-nes one of which Vfe'rmin-gan Edison sere and a freely l movable-fuse earrierleontaining ai plurahty wire eontactiairanged on'acentrally pro-r I 'jecting; journal of saidl fus'e carrier-{and fittingfinto a corresponding;contact-bore of; the footipalijt; inetai -pin s forming the second and, 'separatei eontaets of one of said}. fuse plug l'v'ai'ts, the corresponding s'eeond' con tacts of; thee-then part consisting of socket said metal pinsengaging said seeketswh en' A fuse plug comprising: afoot part having twocontacts for engagingthe connecti on' -contaets'of the lines in-a 'i eeeptaele an' ct a fuseI{car-1 ier movable with regard-to the; foot part and"; containing a plurah-tymf fuse wires, aco'mmon cent -al contact fer all fuse wires =on-the fusecarrier; ;.e ;.j mm1 Fq d fuse carrier, said central contaet-fbei'ng; ar

said foot partfei i d ing"within'saidhoi'e, said animal-"fitting; mm said bore for engaging said" "centra l c ontgaet of 'sa iid fus'e ean'rien with said footijedntact," met-a1: pinsforming the seeond'contact of one of said: fuse-plu'g'paarts; the conrespendingfisecond contacts'of the] other part-ending within holes, said metal is in use; 1 V

I A rfuse plug comprising ayfoot part ham-- in'g twoiconltacts for engaging the conneek, Y tioneconta'cts of th'ehnes in; a reeeptae1e and 1 a fuse gcar tier movable with regard to thej foot'pzirt and containing a phn'al ityoffuse wires, acom'mon central ontact for aIl fuse centrally i ting' on" the l ewei faee pf said? Carmel, d 9 2 1 Contact hem-g; a frmlr ed on sa d pal-nah a central bm'ems d' f t part,l t1 1e-co1nmon foot contact'offsaid foot part ending Within said-: bore; saictfj o urnalt tralljcontact of said' with saidfoot contact, met-alpineprojecting in circulararrangelnentonthe lower face of said" *fuse'carrler, each offsa-ld metal plnsibeing 1n :contactW1th one of saldfuse Wires; an Ed1- son Screw on j sagid foot part, a conductor coming from the metal shellof said Edison 1 screw and terminating in a hole inthe upper face of said foot part,- every one of said 10 7 said contact hole.

metal pinsuofsaidfuse carrier fitting in A; A fuse'plug comprising a foot part havingtwo contacts for engaging the con- "motion-contacts of the linesflinla receptacle and 'affuse carrier' movable with regard to i the footpart and "containing a plurality of rfusewirega coni'lnoncentralcontact for all fus'e wires on the jfusecarrier,v a prismatic;

i o i v 1,577,4 I

my hand;

part ending Within said prismatic bore, said prismatic journal fitting into said bore for engaging said central contact of sald fuse carrier With said foot contact,nietal pins fornnng the second contact of one of said fuse plug parts, the corresponding second contacts] otthe other [part ending Within holes, said lneta'l'plns engaging sald holes when the fuse plug, 1s in use.

In testimony whereof I have hereunto set.

HARR (ERICH VOLKMAR BRUCKNERQ 

